Replies

1. Expert Member
   Malcolm Taylor|Feb 22, 2019 11:23am|#1

   David,

   I can't see any problem with the finished corner, but it does make the framing a bit more complicated.

   Typically the corner is fastened as a T using two studs, and then framed into the wall by nailing it to the plates. The wall it is connected to is framed conventionally, and when the two walls are stood up they are nailed together. It is fast and there is no separate process to provide the backing.

   Using plywood, you are going to have to add the backing once the walls are up, as it can only be fastened to the one stud, not two and the plates as the wood backer would be.

   A second complication is that ideally fasteners are driven through narrow material into thicker stock. But in your situation you won't be able to get a nailer into the corner and will have to hold the plywood tight, while nailing through the stud.

   None of these are big things, but they are worth weighing against the benefit you see in using thinner backers.

2. 
   Aedi|Feb 22, 2019 03:04pm|#2

   You can skip the plywood and just use drywall clips. Joe Lstiburek describes the advantages here:

   https://www.buildingscience.com/documents/insights/bsi-030-advanced-framing

3. 
   David D|Feb 23, 2019 12:16am|#3

   Thanks for the responses. My walls are up already just finishing up adding the blocking. I have plywood scraps so I figured use them; plus I can get more insulation back there. I figure I'll use bar clamps to hold it while fastening.

   Thanks for the idea about the clips but I'd prefer not to buy something if I don't need to; our budget is tiny.

1. Expert Member
   Malcolm Taylor|Feb 23, 2019 12:25am|#4

   David,

   You may find it easier to secure them with deck screws.